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(11) | EP 0 817 411 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Data error correcting method for digital signal frames and apparatus used in the method |
| (57) Received data is applied in units of blocks to an error correcting unit and a data
holding unit. If the error correcting unit normally performs error correction, the
output from the error correcting unit is stored in a frame buffer. If the error correcting
unit does not normally perform error correction, the data in the data holding unit
is stored in the frame buffer. In this manner the first error correction processing
is performed. Bit data is sequentially read out in units of bits from each block stored
in the frame buffer, subjected to the second error correction processing, and returned
to the frame buffer. The third error correction processing is further performed for
the data sequentially output in units of blocks from the frame buffer. |